Analysis and design of acoustic transition sections for impedance matching and mode conversion

被引：0
作者：
Eddie Wadbro
机构：
[1] Umeå University,Department of Computing Science
来源：
Structural and Multidisciplinary Optimization | 2014年 / 50卷
关键词：
Design optimization; Passive acoustic devices; Impedance matching; Power conserving scheme;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This work considers the problem of designing passive transition sections to provide impedance matching and mode conversion for acoustic wave propagation. The base configuration consists of two waveguides connected by a transition section. The objective is to find a placement of material inside this section to make it function as an impedance matcher or a mode converter with minimal losses. A finite element approximation of the Helmholtz equation in a truncated domain together with Dirichlet-to-Neumann type non-reflecting boundary conditions models the wave propagation. Material distribution techniques solve the resulting topology optimization problem and the resulting interfacial devices show good transmission properties.
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页码：395 / 408
页数：13
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